Não informado. (1973). Foodborne and Waterborne Disease Outbreaks. Center for Disease Control.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Foodborne and Waterborne Disease Outbreaks. Atlanta, Ga: Center for Disease Control, 1973.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Foodborne and Waterborne Disease Outbreaks. Center for Disease Control, 1973.
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